package net.zjitc.homework.homework9.ktyio;

/**
 * @Author 李广彦
 * @Date 2019/4/3 9:01
 */
public interface SongDao {
    void init();

    void add(Song song);

    void all();

    void top(String name);

    Song select(String name);

    void before(Song music);
}
